Dynamo-electric machine.



J. A. WILLIAMS. DYNAMO ELECTRIC MAGHINE. APPLICATION FILED SEPT.13,1906. 926,225 Patented June 29, 1909. 2 SHEETS-SHEET 1.

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J. A. WILLIAMS. DYNAMO ELECTRIC MACHINE. APPLICATION FILED SBPT.13,1906.

' Patented June 29, 1909.

BSHEETS-SHEET 2.

lat/6717507! dug Q. LQJLW JOSEPH A. WILLIAMS, OF CLEVELAND, OHIO.

DYNAMO-ELEGTRIC MACHINE.

Application filed September 13, 1906. Serial No. 33%300.

To all whom it may concern:

lie it known that I, JOSEPH A. \VILLIAMS, a citizen of the United States, residing at Cleveland, in thecounty of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in l )ynamo-Electric Machines, of which the following is a full, clear, and exact description.

The object of the present invention is to provide an improved form of generator, de-

' ,signed particularly for use in connection with explosive engines to produce ignition sparks, although it is clear that the invention is capable of much wider application.

A further object is to produce a generator which, in addition to being simple in construction, is of a stable character and is capable of producing .an increased number of alternations of flow of the magnetic lines of force for each revolution, andconsequently, many alternations of the induced current in the armature winding.

The invention involves the combination, with the pole pieces and their magnets, of an armature, consisting of windings and a core made .of magjnetics material passing through said windings and mounted so as to rotate upon an axis which is substantially coincidentwith the axis of the axis of the windings, said core being provided with'a plurality of wings which are arranged onehalf on one side and the other half on the opposite side of the armature windings and are so disposed that when any wing on one side of said windings is in juxtaposition with one pole, a wing on the other side of said windings is in juxtaposition wit-ha pole of opposite sign. I

The invention further involves an electric generator having the characteristics referred to when thearmature windings are upon a non-rotatable spool, and it further involves details of const-ructimi as shown in the drawing and hereinafter described and claimed.

In the drawings, Figure 1 is a. side elevation of a machine embodying the invention, the windings being shown partly in section. Fig. 2 is a top plan view of the ma chine shown in Fig. 1, one of the magnets being broken away. Fig. 3 is an end elevation, one of the -magnets being broken away. Fig. 4 is a detail sectional view taken on the line 4-4 of Fig. 1. Fig. 5 is a sectional view taken on the line 5'-5 of Fig. 1.

Referring to the drawin s, N and S represent.- respectively, the nort and south pole Specification'of Letters Patent.

suitable support C.

the essence of the broad invention that these Patented June 29, 1909.

pieces of the magnets A A which magnets may be permanent magnets or clectro-magnets, as desired. The pole pietes are so disposed that the pieces at the opposite ends of the same side of the machine are of opposite polarity and the pieces on the op posite sides of the same end are of opposite polarity. The faces of said pole pieces are curved about the axis of the core D as a. center and the centers of said. pole faces on opposite sides at the same end are substantially apart, and the centers of the faces on the same side are practically in a line parallel with the axis of the core D.

D represents the armature core and the armature windings, said windings con sisting of an insulating spool and wire coils wound thereon. The armature core is retat-ably mounted between the curved faces of the pole pieces and upon an axis which is coincident with the axis of curvature of pole pieces, and said core passes through the armature windings, that is to say, through the spool and the wire coils thereon so that its axis of rotation is substantially coine dent with the axis of said windings. C I represent the hearings in which said arn'neture core is mounted.

In the construction shown, the windings, that is to say, the spool and the coils thereon, arestationary, the spool being fixed to' a It is' not, however, of

windin s shall be non-rotatable, although it is a desired feature of construction.

The core, which must be made of magnetic material, preferably soft iron, is provided with four radiating winds D D D and D The wings D D are at one end of the spool and the other two wings, namely, D D are at the other end thereof. The wings D and I) extend in the same direction in the diametrical plane, while the wings D and l) extend in the diametrically opposite direction, and, therefore, in the same diametrical plane.

The pole pieces and wings being arranged as described. it is evident that when one. of the wings. as for example the wing D', is in juxtaposition to the face of one pole piece,

the end of the wing D which extend in the same plane and in the same direction the core but at the opposite end thereof, be in juxtaposition to the face of ano pole piece of the opposite sign. netic lines of force flowing from thenortn brings the wing D in juxtaposition to thev the core and thence through the Wing D to pole piece would enter one wing D, for example, and flow along the core and through the windings and, out of the wing D to the south pole piece, thereby inducing a current flow in one direction through the Wire of the coils. a i

,As the core contlnuesyto rotate, it next second nerth pole piece which will be at the opposite end from the north pole piece first mentioned and the wing D /Will be brought into juxtaposition'to the second south pole piece which lies at the end opposite to that at which the first mentioned south pole piece is located, whereupon the magnetic lines of 'force willenter said WingD andfiovv along a south pole piece, thereby going through the windings in the opposite direction and inducing an the wire of the coils a current flow in the direction which is opposite to that first referred to. The device shown, has, therefore, a great advantage over other magnetoelectro machines used for this ,purpose, especially such machines as aroused upon automobiles, because such other de vices do not become sufficiently active to produce the desired result until they come rapid; rotation, and therefore, it is usushynecessary to provide'an auxiliary device ofsome sort as a dry battery: to produce the igniting sparks necessary to put the engine 111 operation.

'Having thus described my invention,

claim:

In a nagnetdeleetric machine, the combination of a spool on which are armature windings, and a rotatable core passed axially through said spool and having, at one end of the spool,,two, diametrically opposed proj'ecting Wings,,and having at the other end iii) of'said spool two opposed projecting wings lying in the samediametrical plane with the two fi st mentioned wings, with a pair of magnets having pole/pieces Whose faces are A concentric with the axis of seid core and lie outside the redial'lengthoftthesaid wings but closely adjacent thereto, inclosing the path of movement of the wings beneath the same, whichpiecesarefo'f opposite polarity at the opposite ends ofpthe same side of the 

